Are all Diamond Certificates the same?

What this question is really asking is do all the certificates that are out there and advertised by the various purveyors of diamonds accurately describe the quality of the diamond in terms of how well cut it is, its colour grade and how imperfect it is (known in the trade as how included it is), perfection being the complete absence of any imperfections at all which is quite rare.

Well the short answer to this question is no. Whilst there are many certificates around, they can be thought of in tiers of accuracy.